Electrochemically shape-controlled synthesis in deep eutectic solvents: triambic icosahedral platinum nanocrystals with high-index facets and their enhanced catalytic activity

Lü, Wei; Zhou, Zhi‐You; Chen, Sheng-Pei; Xu, Chang-Deng; Su, Dang Sheng; Schuster, Manfred Erwin; Sun, Shi‐Gang

doi:10.1039/c3cc46473c

Cited by 95 publications

(65 citation statements)

References 21 publications

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“…Catalytic activities of electrochemically produced nanoparticles were also a matter of study for different reactions [82][83][84]. Special morphologies obtained were controllable by changing time, current density, temperature as well as the applied potential.…”

Section: Des-based Nano Production: An Overview About Applications Amentioning

confidence: 99%

Potential applications of deep eutectic solvents in nanotechnology

Abo-Hamad

Hayyan

AlSaadi

et al. 2015

Chemical Engineering Journal

462

217

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Section: Des-based Nano Production: An Overview About Applications Amentioning

confidence: 99%

Potential applications of deep eutectic solvents in nanotechnology

Abo-Hamad

Hayyan

AlSaadi

et al. 2015

Chemical Engineering Journal

462

217

View full text Add to dashboard Cite

“…A DES was formed by stirring ChCl and U (reline, molar ratio: (ChCl)/U ¼ 1/2) at 80 C until homogeneous and colourless liquids. 3,28,31 The prepared reline, once formulated, was kept in a vacuum at 80 C prior to use.…”

Section: Preparation Of Desmentioning

confidence: 99%

“…3,4 The electrooxidation of alcohols has come to be of signicant interests because of its potential application in direct alcohol fuel cells (DAFCs) over the past few years. [5][6][7] To date, tremendous efforts have been made to investigate the electrooxidation of alcohols including methanol, ethanol, ethylene glycol (EG), propanol and glycerol.…”

Section: Introductionmentioning

confidence: 99%

Shape-controlled electrochemical synthesis of Au nanocrystals in reline: control conditions and electrocatalytic oxidation of ethylene glycol

Chen

Duan

et al. 2017

RSC Adv.

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Gold nanocrystals (NCs) as advanced catalysts towards ethylene glycol (EG) electrooxidation in direct alcohol fuel cells (DAFCs) have some advantages, such as good poisoning-resistance and high electrocatalytic activity. The shape and size control of Au NCs are crucial to their electrocatalytic activity.In this work, the control of morphologies and sizes of prepared Au NCs in reline are systematically investigated by changing electrodeposition conditions: the applied potential, electrodeposition temperature, HAuCl 4 concentration and electrodeposition time. Results show that reline (a deep eutectic solvent (DES), a mixture of choline chloride and urea at the molar ratio of 1 : 2) plays an important part in the nucleation and growth of the star-like Au NCs. This approach for preparing star-like Au NCs in reline does not need any supporting electrolyte and organic solvent, and thus is more environmentally friendly than water as a medium. The electrode modified by the as-prepared Au nanostars (NSs) exhibits a good poisoning-resistance ability and electrocatalytic activity for EG electrooxidation in alkaline media. This strategy is a significant way for shape-controlled synthesis of noble metal nanomaterials in DESs that may have potential applications in fields of electrochemical sensors, electrocatalysis and fuel cells.

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“…[64,65] For spherical Pt nanoparticles, although they do not have preferentialo rientations, their rich low-coordinate atoms on the surfacea re also effective at splitting the CÀCb ond, and therefore, CO is also detected. [67][68][69][70][71][72] In at ypical study,t he group of Sun prepared Pt particles with unusual tetrahexahedral (THH)m orphologyt hrough electrochemical treatment of spherical Pt precursors on glassy carbon. [66] Platinum nanoparticles with high-index planesu sually exhibit much higherc atalytic activity than that of particles with low Miller indicesb ecause of the presence of ah igh density of atomic steps, ledges, andk inks, whicho ften serve as active sites for splitting chemical bonds.…”

Section: Platinum and Palladiummentioning

confidence: 99%

Nanocatalysts for Electrocatalytic Oxidation of Ethanol

et al. 2019

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The use of ethanol as a fuel in direct alcohol fuel cells depends not only on its ease of production from renewable sources, but also on overcoming the challenges of storage and transportation. In an ethanol‐based fuel cell, highly active electrocatalysts are required to break the C−C bond in ethanol for its complete oxidation at lower overpotentials, with the aim of increasing the cell performance, ethanol conversion rates, and fuel efficiency. In recent decades, the development of wet‐chemistry methods has stimulated research into catalyst design, reactivity tailoring, and mechanistic investigations, and thus, created great opportunities to achieve efficient oxidation of ethanol. In this Minireview, the nanomaterials tested as electrocatalysts for the ethanol oxidation reaction in acid or alkaline environments are summarized. The focus is mainly on nanomaterials synthesized by using wet‐chemistry methods, with particular attention on the relationship between the chemical and physical characteristics of the catalysts, for example, catalyst composition, morphology, structure, degree of alloying, presence of oxides or supports, and their activity for ethanol electro‐oxidation. As potential alternatives to noble metals, non‐noble‐metal catalysts for ethanol oxidation are also briefly reviewed. Insights into further enhancing the catalytic performance through the design of efficient electrocatalysts are also provided.

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Electrochemically shape-controlled synthesis in deep eutectic solvents: triambic icosahedral platinum nanocrystals with high-index facets and their enhanced catalytic activity

Cited by 95 publications

References 21 publications

Potential applications of deep eutectic solvents in nanotechnology

Potential applications of deep eutectic solvents in nanotechnology

Shape-controlled electrochemical synthesis of Au nanocrystals in reline: control conditions and electrocatalytic oxidation of ethylene glycol

Nanocatalysts for Electrocatalytic Oxidation of Ethanol

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